48results about How to "Guaranteed axial movement" patented technology

The invention provides a rotor, a motor, a water pump and a vehicle. The rotor comprises a rotating shaft, a rotor core and a plastic-coated bod, wherein the rotor iron core is sleeved on the rotatingshaft and synchronously rotates with the rotating shaft, and magnetic steel is arranged in the rotor core; and the plastic-coated body completely wraps the part of the rotor core exposed out of the rotating shaft, forms an integrated structure together with the rotor core and the rotating shaft, and is provided with a positioning structure for positioning the position of the magnetic steel. According to the rotor provided by the invention, the plastic-coated body completely wraps the part of the rotor core exposed out of the rotating shaft, so that the rotor core can be stably and firmly sealed in the plastic-coated body, the situation of displacement, even separation and the like cannot occur, the use reliability of the motor is improved, and in the meantime, complicated processes such as the fixing of fasteners are omitted, which simplifies the production process and improves the preparation efficiency; and the positioning structure on the plastic-coated body can accurately positionthe magnetic steel, so that the magnetizing position of the magnetic steel is accurately positioned, and the magnetizing accuracy is improved.

The invention discloses an assembly welding tool for a wheel disc body and an application method. The assembly welding tool comprises a support seat, a left support upright, a right support upright, a stepping motor, a rolling bearing, a driving chuck, a short shaft, a long clamping jaw, a driven chuck, a long shaft, a bearing sleeve, a return shaft sleeve, a return pull disc, a push pull disc, a push shaft, a thrust bearing, an air cylinder, a working air chamber, a return air chamber and an air cylinder bracket, wherein the support seat comprises the left and right support uprights; the short shaft is in interference fit connection with the left support upright through the rolling bearing; the long shaft is in clearance fit connection with the bearing sleeve; the bearing sleeve is in interference fit connection with the right support column; and the long clamping jaw is embedded in the driving chuck and driven chuck. The technical scheme disclosed by the invention overcomes the deformation problem of free quenching of the wheel disc body, solves the cracking problem caused by pressure quenching and increases the product yield.

The invention discloses an H-shaped wheel tightening device for a water tank wire-drawing machine. The tightening device comprises a first disc spring tightening mechanism and a second disc spring tightening mechanism which are symmetrically arranged at two ends of an H-shaped wheel in the axial direction. The first disc spring tightening mechanism comprises a first cylindrical mounting seat, a first fixing sleeve, a first end cap and a first sliding shaft; the first fixing sleeve is annularly arranged on a cavity of the first mounting seat and is attached to the inner wall of the cavity; thefirst end cap is arranged at one end of the cavity of the first mounting seat; the first end cap and the first fixing sleeve are fixed in the circumferential direction; and the first sliding shaft penetrates in the middle of the cavity of the first mounting seat in the axial direction. The second disc spring tightening mechanism comprises a second cylindrical mounting seat, a second fixing sleeve,a second end cap and a second sliding shaft, wherein the second fixing sleeve is annularly arranged on a cavity of the second mounting seat and is attached to the inner wall of the second mounting seat; the second end cap is arranged at one end of the cavity of the second mounting seat; the second end cap and the second fixing sleeve are fixed in the circumferential direction; and the second sliding shaft penetrates in the middle of the cavity of the second mounting seat in the axial direction. The H-shaped wheel tightening device for the water tank wire-drawing machine is simple in structure, and is safe and reliable, and thus, the working efficiency of rolling of steel cords is ensured.

The invention discloses an adaptive frequency-modulation type dynamic vibration absorber, and belongs to the technical field of vibration noise controlling. The vibration absorber comprises a stepping motor, a rotary table, a connecting rod, a guiding rod, an adjusting mass block, a fixed mass block, a stepping motor controlling system, an elastic element, a wiring terminal, a top plate, a bottom plate, a wiring terminal, a linear bearing, a hinge pin, a nut and a shell, wherein the rotary table, the connecting rod, the guiding rod and the linear bearing inlaid in the shell form a connecting rod system; the turning direction and the step size of the stepping motor are controlled by the stepping motor controlling system; the rotary table is driven to rotate; the rotary table rotates to drive the connecting rod system to work so that the guiding rod upwards moves on the linear bearing; the length of the guiding rod is adjusted; the rigidity of the vibration absorber is changed; and the purpose of modulating frequency is achieved. The change of the revolving speed of a controlled object can be automatically tracked; the frequency of the vibration absorber is automatically modulated; and the vibration absorbing effect of controlled equipment is ensured under variable working conditions or during revolving speed drifting.